Delmar's Standard Textbook Of Electricity
7th Edition
ISBN: 9781337900348
Author: Stephen L. Herman
Publisher: Cengage Learning
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Chapter 29, Problem 7RQ
To determine
The type of field winding which is made with many turns of small wire
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Is this armature winding a progressive or a retro-progressive winding?
W
N
Select one:
2
B
4'
O a. Both
O b. Progressive
OC. Neither
O d. Retro-progressive
B
S
A four-pole lap-wound DC machine
armature has 54 slots with single-turn
coils. How many armature conductors
are required if there are two coil sides
per slot?
Shunt field winding is thin wire of many turns.
True or False
Chapter 29 Solutions
Delmar's Standard Textbook Of Electricity
Ch. 29 - What is a generator?Ch. 29 - Prob. 2RQCh. 29 - Prob. 3RQCh. 29 - Prob. 4RQCh. 29 - What are interpoles, and what is their purpose?Ch. 29 - How are interpoles connected in relation to the...Ch. 29 - Prob. 7RQCh. 29 - How is the series field connected in relation to...Ch. 29 - How is the shunt field connected in relation to...Ch. 29 - What is armature reaction?
Ch. 29 - What is armature reaction proportional to?Ch. 29 - What are eddy currents?Ch. 29 - What condition characterizes overcompounding?Ch. 29 - What is the function of the shunt field rheostat?Ch. 29 - Explain the difference between cumulative- and...Ch. 29 - Explain the difference between cumulative- and...Ch. 29 - What three factors determine the amount of output...Ch. 29 - What is the voltage regulation of a DC generator...Ch. 29 - Prob. 19RQCh. 29 - Prob. 20RQCh. 29 - You are working as an electrician in a large steel...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Similar questions
- 3-5. A three-phase, A-connected, six-pole winding is installed in 36 slots on a stator. There are 150 turns of wire in each slot of the windings. All coils in cach phase are connected in series. The flux per pole in the machine is 0.060 Wb, and the speed of rolation of the magnetic field is 1000 r/min. (a) What is the frequency of the voltage produced in this winding? (b) What are the resulting phase and terminal voltages of this stator? 3-6. Athree-phase, Y-connected, 60 Hz, two-pole synchronous machine has a stator with 5000 rurns of wire per phase. What rotor flux would be required to produce a termi- nal (line-to-line) voltage of 13.2 kV? 3-7. Modify the MATLAB in Example 3–1 by swapping the currents flowing in any twoarrow_forwardFor 6 polar D.C machine armature has 36 number of slots and the type of winding is a double layer simplex lap winding. a. How many coils are present? b. What is the coil span in terms of number of slots? c. If each coil has 4 turns, then what is the total number of armature conductors presents? d. How many parallel paths will be their in the armature? e. Altogether how many brushes will be their?arrow_forward3-4. A three-phase, Y-connected, four-pole winding is installed in 24 slots on a stator. There are 40 turns of wire in each slot of the windings. All coils in cach phase are connected in series. The flux per pole in the machine is 0.060 Wb, and the speed of rotation of the magnetic field is 1800 r/min. (a) What is the frequency of the voltage produced in this winding? (b) What are the resulting phase and terminal voltages of this stator? 3-5. A three-phase, A-connected, six-pole winding is installed in 36 slots on a stator. There are 150 turns of wire in each slot of the windings. All coils in each phase are connected in series. The flux per pole in the machine is 0.060 Wb, and the speed of rolation of the magnetic fieid is 1000 r/min. (a) What is the frequency of the voltage produced in this winding? (b) What are the resulting phase and terminal voltages of this sStator?arrow_forward
- A flux of 0.5 Weber flows through a core with a total reluctance of 60,000 ampere-turns/Weber. How much current (in amperes) should be flowing through a winding with 4,000 turns to produce the given amount of flux?arrow_forwardFor a four pole, 16 slot armature with two coil-side/slot having wave connected progressive winding has single turn coils has simplex winding. The number of current paths is?arrow_forwardfill inthe blank : field winding has large numberofturns of thin copper wire. a. Shunt b. Series c. Compound d. separately excitedarrow_forward
- 4. A 4-pole, lap-wound armature has 144 slots with two coil sides per slot, each coil having two turns. If the flux per pole is 20 mWb and the armature rotates at 700 rpm, what is the induced voltage?arrow_forwardWhich of the following is/are a part a generator's electric circuit?a) the commutator b) the brushes c) the armature windings d) all of the abovearrow_forwardIs this armature winding a progressive or a retro-progressive winding? 9. 10 8 16 12 4- 6 14 North 5-0013 pole South s13- pole 14 15 10 3 16 Select one: Oa. Neither b. Both C. Progressive O d. Retro-progressive 2.arrow_forward
- The resistance of the shunt winding of a d.c machine is measured before and after a run of several hours. The average values are 55 ohms and 63 ohms. Calculate the rise in temperature of the winding (Temperature coefficient of resistance of copper is 0.00428 ohm per ohm per °C). [36°C]arrow_forwardFor 4 pole d.c machine armature winding with a double layer progressive simplex wave winding with 23 number of slots answer the following: a How many coils are present? b What is the coil span in terms of number of slots? c What is commutator pitch in terms of commutator segments? d How many coils are there between two consecutive commutator segments? e How many parallel paths are present?arrow_forwardDesign a winding diagram given the following specifications. Simplex Lap Progressive Winding No. of Poles = 4 Turn/coil = 1 • Conductor/Slot = 2 No. of Commutator Segments = 28 No. of Slots = 28arrow_forward
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